8 



J. M. Macfarlane. — Gephalotaceae. 



In section the lid is seen to consist, between the outer and inner epidermis, of about 

 seven layers of cells, the outermost 3 — 4 layers of which are smallest and most 

 richly chlorophylloid, the next 2 — 3 layers are less so, while the innermost layer consists 

 of large clear cells that suggest an aqueous tissue. Sections of the white areas of the 

 lid show that each results from the mesophyll tissue becoming reduced to 3 — 4 layers 

 of clear large cells that are either devoid of chloroplasts, or have a few small ones in 

 the outermost layer. It is here worthy of emphasis that the lid represents a forward 



Fig. 3. Histology of Cephalotus. A pitcher sectioned lengthwise, p petiole, h hairs, Ip lateral 

 patch. — Aa lid-cells and attractive gland. — Ab cells of conducting surface. — Ac cells and 

 gland from upper part of detentive surface. — Ad cells from lower part. — Ae water stomata 

 and cells of lateral patch. — B gland of lateral patch in section, a gland bündle. — C Leaf 



hair magn. (origin.). 



expansion of the entire basal portion of the upper leaf tissue, and so has a different 

 morphological value from the lid of other "pitcher-plants", though showing similar con- 

 trivances. 



The surface of the corrugated rim consists of elongated epidermal cells that are 

 all overlapped by the inwardly projecting edges of those above or without, so that its 

 histological resemblance to the peristome of Nepenthes is suggestive. Glands are 



